Engineering for extreme load conditions: How Tajfun optimizes forestry equipment using Strenx® High-Strength Steel
6 min read
Product
Strenx® 700MC D/ECountry
Slovenia
Company
Industry
Brand program
My Inner Strenx®
Tajfun builds forestry equipment for extreme, unpredictable conditions, where strength and reliability are non‑negotiable. By engineering key structures with Strenx® performance steel, the company achieves lighter designs without sacrificing durability. What began as a single material fix has evolved into a long-term engineering approach centered on high‑strength steel. Today, Tajfun’s My Inner Strenx® certified machines reflect decades of development and a commitment to premium materials.
Key Takeaways
Certified equipment: Industrial logging winches and forestry cranes optimized for volatile, high-stress timber harvesting environments.
Engineering challenge: Balancing strength, durability and structural weight under high and unpredictable loads.
Material solution: Strenx® 700MC, Strenx® 700MCE in the main structure, combined with Hardox® 450 in wear-exposed areas.
Result: Lighter structures, high durability and reliable long-term performance.
Certification: My Inner Strenx® certified since 2015.
My Inner Strenx® Certified Logging Winches and Forestry Cranes
Forestry puts equipment under constant pressure. Machines must handle high forces and unpredictable loads over years of hard use. And they need to do it while being as light as possible.
For Tajfun, it’s a challenge they’ve been working on for decades. The Slovenian manufacturer develops equipment for demanding applications, with forestry at the core of its business. Its My Inner Strenx® certified logging winches and forestry cranes are used by forestry professionals around the world, while the same high-strength steel expertise extends across other parts of Tajfun’s equipment portfolio.
Engineering for demanding forestry applications
The forces acting on forestry equipment are hard to predict.
A logging winch may encounter sudden load changes when pulling timber across uneven terrain. A forestry crane must handle heavy loads while maintaining stability, reach and long-term durability throughout thousands of operating cycles.
Adding more steel is rarely the answer. More material means more weight, which affects efficiency, handling and overall machine performance.
The answer lies in getting more strength out of less material — and that starts with choosing the right steel.
A challenge that changed the way Tajfun designed equipment
Tajfun's experience with Strenx® began with a practical problem. Several years ago, the company experienced cracking in a highly loaded frame area on one of its machines. The challenge required a reliable solution, but redesigning the entire structure would have required significant time and resources.
Instead, Tajfun replaced the conventional steel with Strenx®. The result surprised them. The structural issue was resolved without changing the frame design.
That experience changed how Tajfun approached product development. Rather than treating steel as a standard material choice, the company began using high-strength steel as an engineering tool — one that could optimize structures, improve durability and enable lighter designs.
"We simply replaced conventional steel with Strenx® and solved the problem without changing the frame design."
Tajfun has worked with SSAB ever since.
Using strength where it matters most
Today, Strenx® is integrated throughout Tajfun's certified forestry equipment. The company uses Strenx® in highly loaded structural areas, fatigue-sensitive components and parts exposed to demanding operational forces. The majority of the load-bearing structures in both logging winches and forestry cranes are manufactured using Strenx® high-strength structural steel, including Strenx® 700MC and Strenx® 700 MCE. In wear-exposed components, Tajfun complements the structure with Hardox® wear plate. This combination allows engineers to place strength where it is needed most while maintaining an optimized structural design.
Lower weight without compromising durability
Designing with high-strength steel makes it possible to reduce weight without sacrificing performance.
By utilizing the strength of Strenx®, Tajfun can use thinner material in selected areas while maintaining the structural integrity required for demanding forestry applications. This enables lighter equipment without compromising durability.
For operators, lighter equipment means easier handling, better efficiency and more practical use in day-to-day work.
Equipment in action, engineered for the demands of forestry
See Tajfun’s My Inner Strenx® certified forestry equipment in action. Designed for demanding timber harvesting conditions, Tajfun’s logging winches and forestry cranes combine high-strength Strenx® steel with optimized structural design to handle high loads while keeping weight under control. Want to know more about Tajfun and their equipments? Have a look at tajfun.com
"Today, we use Strenx® in highly loaded areas and in places where we expect unusual loads. Another major advantage is that we can use thinner materials and therefore produce lighter products."
From material choice to engineering expertise
Through years of developing demanding equipment, Tajfun has built extensive knowledge in designing, welding, forming and manufacturing with high-strength steel. This experience allows the company to confidently use Strenx® in increasingly demanding applications and refine its products.
"We are most proud of the knowledge we have gained. We now master Strenx® technology and know how to weld it, bend it and use it in more and more products."
That knowledge extends beyond forestry. Tajfun's entire crane range covering forestry, off-road and recycling applications — is now manufactured almost entirely from Strenx®. The same material expertise allows Tajfun to apply high-strength steel across different equipment concepts where strength, durability and structural weight matter.
Why Tajfun chooses Strenx®
Tajfun has worked with SSAB for decades. What keeps the partnership going is the consistency of the material, the reliability of supply and the technical support that comes with it.
"We chose Strenx® because Tajfun is committed to using premium materials."
That commitment runs through every component and design decision, with the goal of building equipment that performs reliably throughout its service life.
What My Inner Strenx® Certification means
My Inner Strenx® certification is awarded to specific equipment that has been engineered using Strenx® performance steel and meets the requirements of the program. For Tajfun's certified logging winches and forestry cranes, the certification provides independent verification that Strenx® is an integral part of the equipment's structural design.
It also reflects the engineering decisions behind the product — a commitment to high-quality materials, sound engineering principles and continuous improvement.
"The My Inner Strenx® certificate confirms our commitment to using premium materials."
Built for the forest, engineered for the long term.
Forestry equipment has to perform reliably year after year. For Tajfun, that means understanding how materials, design and manufacturing work together — not just specifying strong steel.
From fixing a cracked frame to designing entire machine structures around Strenx®, Tajfun’s experience shows what’s possible when engineering expertise and high-strength steel work together. That experience now extends across Tajfun’s equipment portfolio, where Strenx® is used to support demanding designs beyond forestry.
The result is My Inner Strenx® certified forestry equipment built to handle demanding loads and deliver reliable performance in the field, backed by engineering knowledge that Tajfun applies across its wider range of equipment.
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